/*
 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <assert.h>
#include <errno.h>
#include <firmware_image_package.h>
#include <io/io_block.h>
#include <io/io_driver.h>
#include <io/io_fip.h>
#include <io/io_memmap.h>
#include <platform_def.h>
#include <types.h>
#include <utils_def.h>
#include <xlat_tables_v2.h>

#include "uniphier.h"

#define UNIPHIER_ROM_REGION_BASE    0x00000000
#define UNIPHIER_ROM_REGION_SIZE    0x10000000

static const io_dev_connector_t *uniphier_fip_dev_con;
static uintptr_t uniphier_fip_dev_handle;

static const io_dev_connector_t *uniphier_backend_dev_con;
static uintptr_t uniphier_backend_dev_handle;

static io_block_spec_t uniphier_fip_spec = {
    /* .offset will be set by the io_setup func */
    .length = 0x00200000,
};

static const io_uuid_spec_t uniphier_bl2_spec = {
    .uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2,
};

static const io_uuid_spec_t uniphier_scp_spec = {
    .uuid = UUID_SCP_FIRMWARE_SCP_BL2,
};

static const io_uuid_spec_t uniphier_bl31_spec = {
    .uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
};

static const io_uuid_spec_t uniphier_bl32_spec = {
    .uuid = UUID_SECURE_PAYLOAD_BL32,
};

static const io_uuid_spec_t uniphier_bl33_spec = {
    .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
};

#if TRUSTED_BOARD_BOOT
static const io_uuid_spec_t uniphier_tb_fw_cert_spec = {
    .uuid = UUID_TRUSTED_BOOT_FW_CERT,
};

static const io_uuid_spec_t uniphier_trusted_key_cert_spec = {
    .uuid = UUID_TRUSTED_KEY_CERT,
};

static const io_uuid_spec_t uniphier_scp_fw_key_cert_spec = {
    .uuid = UUID_SCP_FW_KEY_CERT,
};

static const io_uuid_spec_t uniphier_soc_fw_key_cert_spec = {
    .uuid = UUID_SOC_FW_KEY_CERT,
};

static const io_uuid_spec_t uniphier_tos_fw_key_cert_spec = {
    .uuid = UUID_TRUSTED_OS_FW_KEY_CERT,
};

static const io_uuid_spec_t uniphier_nt_fw_key_cert_spec = {
    .uuid = UUID_NON_TRUSTED_FW_KEY_CERT,
};

static const io_uuid_spec_t uniphier_scp_fw_cert_spec = {
    .uuid = UUID_SCP_FW_CONTENT_CERT,
};

static const io_uuid_spec_t uniphier_soc_fw_cert_spec = {
    .uuid = UUID_SOC_FW_CONTENT_CERT,
};

static const io_uuid_spec_t uniphier_tos_fw_cert_spec = {
    .uuid = UUID_TRUSTED_OS_FW_CONTENT_CERT,
};

static const io_uuid_spec_t uniphier_nt_fw_cert_spec = {
    .uuid = UUID_NON_TRUSTED_FW_CONTENT_CERT,
};
#endif /* TRUSTED_BOARD_BOOT */

struct uniphier_io_policy {
    uintptr_t *dev_handle;
    uintptr_t image_spec;
    uintptr_t init_params;
};

static const struct uniphier_io_policy uniphier_io_policies[] = {
    [FIP_IMAGE_ID] = {
        .dev_handle = &uniphier_backend_dev_handle,
        .image_spec = (uintptr_t)&uniphier_fip_spec,
    },
    [BL2_IMAGE_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_bl2_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [SCP_BL2_IMAGE_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_scp_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [BL31_IMAGE_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_bl31_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [BL32_IMAGE_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_bl32_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [BL33_IMAGE_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_bl33_spec,
        .init_params = FIP_IMAGE_ID,
    },
#if TRUSTED_BOARD_BOOT
    [TRUSTED_BOOT_FW_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_tb_fw_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [TRUSTED_KEY_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_trusted_key_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [SCP_FW_KEY_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_scp_fw_key_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [SOC_FW_KEY_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_soc_fw_key_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [TRUSTED_OS_FW_KEY_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_tos_fw_key_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [NON_TRUSTED_FW_KEY_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_nt_fw_key_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [SCP_FW_CONTENT_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_scp_fw_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [SOC_FW_CONTENT_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_soc_fw_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [TRUSTED_OS_FW_CONTENT_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_tos_fw_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
    [NON_TRUSTED_FW_CONTENT_CERT_ID] = {
        .dev_handle = &uniphier_fip_dev_handle,
        .image_spec = (uintptr_t)&uniphier_nt_fw_cert_spec,
        .init_params = FIP_IMAGE_ID,
    },
#endif
};

static int uniphier_io_block_setup(size_t fip_offset, uintptr_t block_dev_spec)
{
    int ret;

    uniphier_fip_spec.offset = fip_offset;

    ret = register_io_dev_block(&uniphier_backend_dev_con);
    if (ret)
        return ret;

    return io_dev_open(uniphier_backend_dev_con, block_dev_spec,
               &uniphier_backend_dev_handle);
}

static int uniphier_io_memmap_setup(size_t fip_offset)
{
    int ret;

    uniphier_fip_spec.offset = fip_offset;

    ret = mmap_add_dynamic_region(fip_offset, fip_offset,
                      uniphier_fip_spec.length,
                      MT_RO_DATA | MT_SECURE);
    if (ret)
        return ret;

    ret = register_io_dev_memmap(&uniphier_backend_dev_con);
    if (ret)
        return ret;

    return io_dev_open(uniphier_backend_dev_con, 0,
               &uniphier_backend_dev_handle);
}

static int uniphier_io_fip_setup(void)
{
    int ret;

    ret = register_io_dev_fip(&uniphier_fip_dev_con);
    if (ret)
        return ret;

    return io_dev_open(uniphier_fip_dev_con, 0, &uniphier_fip_dev_handle);
}

static int uniphier_io_emmc_setup(unsigned int soc_id)
{
    uintptr_t block_dev_spec;
    int ret;

    ret = uniphier_emmc_init(&block_dev_spec);
    if (ret)
        return ret;

    return uniphier_io_block_setup(0x20000, block_dev_spec);
}

static int uniphier_io_nand_setup(unsigned int soc_id)
{
    uintptr_t block_dev_spec;
    int ret;

    ret = uniphier_nand_init(&block_dev_spec);
    if (ret)
        return ret;

    return uniphier_io_block_setup(0x20000, block_dev_spec);
}

static int uniphier_io_nor_setup(unsigned int soc_id)
{
    return uniphier_io_memmap_setup(0x70000);
}

static int uniphier_io_usb_setup(unsigned int soc_id)
{
    uintptr_t block_dev_spec;
    int ret;

    /* use ROM API for loading images from USB storage */
    ret = mmap_add_dynamic_region(UNIPHIER_ROM_REGION_BASE,
                      UNIPHIER_ROM_REGION_BASE,
                      UNIPHIER_ROM_REGION_SIZE,
                      MT_CODE | MT_SECURE);
    if (ret)
        return ret;

    ret = uniphier_usb_init(soc_id, &block_dev_spec);
    if (ret)
        return ret;

    return uniphier_io_block_setup(0x20000, block_dev_spec);
}

static int (* const uniphier_io_setup_table[])(unsigned int) = {
    [UNIPHIER_BOOT_DEVICE_EMMC] = uniphier_io_emmc_setup,
    [UNIPHIER_BOOT_DEVICE_NAND] = uniphier_io_nand_setup,
    [UNIPHIER_BOOT_DEVICE_NOR] = uniphier_io_nor_setup,
    [UNIPHIER_BOOT_DEVICE_USB] = uniphier_io_usb_setup,
};

int uniphier_io_setup(unsigned int soc_id)
{
    int (*io_setup)(unsigned int soc_id);
    unsigned int boot_dev;
    int ret;

    boot_dev = uniphier_get_boot_device(soc_id);
    if (boot_dev == UNIPHIER_BOOT_DEVICE_RSV)
        return -EINVAL;

    io_setup = uniphier_io_setup_table[boot_dev];
    ret = io_setup(soc_id);
    if (ret)
        return ret;

    ret = uniphier_io_fip_setup();
    if (ret)
        return ret;

    return 0;
}

int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
              uintptr_t *image_spec)
{
    uintptr_t init_params;

    assert(image_id < ARRAY_SIZE(uniphier_io_policies));

    *dev_handle = *(uniphier_io_policies[image_id].dev_handle);
    *image_spec = uniphier_io_policies[image_id].image_spec;
    init_params = uniphier_io_policies[image_id].init_params;

    return io_dev_init(*dev_handle, init_params);
}

int uniphier_check_image(unsigned int image_id)
{
    uintptr_t dev_handle, image_spec, image_handle;
    int ret;

    ret = plat_get_image_source(image_id, &dev_handle, &image_spec);
    if (ret)
        return ret;

    ret = io_open(dev_handle, image_spec, &image_handle);
    if (ret)
        return ret;

    io_close(image_handle);

    return 0;
}
